The Drainage root operation is identified by the character code
9 in the 3rd position of the procedure code. It is defined as Taking or letting out fluids and/or gases from a body part.
The qualifier DIAGNOSTIC is used to identify drainage procedures that are biopsies.
0 = Medical and Surgical
H = Skin and Breast
The 4th character refers to the body part or body region.
Taking or letting out fluids and/or gases from a body part